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3 years ago

Can someone help me with this one. I’m stuck

Mathematics

1 answer:

zmey [24]3 years ago

7 0

you should use this one app called photomath it will give you all the right answers for math... it works....

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Can someone help me with a, b, c, and d I would really appreciate it

dsp73

Step-by-step explanation:

a. Area = 121 ft²

s² = 121

s = √121

Therefore s = 11 ft

b. Area = 81 yd²

s² = 81

s = √81

Therefore s = 9 yd

c. Area = 324 cm²

s² = 324

s = √324

Therefore s = 18 cm

d. Area = 361 mi²

s² = 361

s = √361

Therefore s = 19 MI

6 0

3 years ago

Using principle of mathematical induction prove that 6^-1 divisble by 5 .

salantis [7]

I suppose the claim is $5 \mid 6^n - 1$ for $n\in\Bbb N$ .

When $n=1$ , we have $6^1 - 1 = 6 - 1 = 5$ , and of course 5 divides 5.

Assume the claim holds for $n=k$ , that $5 \mid 6^k - 1$ . We want to use this to show it holds for $n=k+1$ , that $5 \mid 6^{k+1} - 1$ .

We have

$6^{k+1} - 1 = \left(6^{k+1} - 6\right) + \left(6 - 1) = 6\left(6^k - 1\right) + 5$

Since $5 \mid 6^k - 1$ , we can write $6^k - 1 = 5\ell$ for some integer $\ell$ . Then

$6^{k+1} - 1 = 6\cdot5\ell + 5 = 5(6\ell + 1)$

which is clearly divisible by 5. QED

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1 year ago

What is the volume of the figure?

Usimov [2.4K]

The answer is C) 108 cubic units.

8 0

3 years ago

Trying to understand this question

Varvara68 [4.7K]

Answer:

option 2 I think sorry if its incorrect

5 0

3 years ago

I need help with this as soon as possible. <br> #7 & 8

Anvisha [2.4K]

If I knew the answer I would helped u b,
$7yx$
ut I'm only in 7th grade but I will try

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3 years ago